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Significant enhancement of dielectric permittivity and percolation behaviour of La(2−x)Sr(x)NiO(4)/poly(vinylidene fluoride) composites with different Sr doping concentrations
The percolation behaviour and dielectric properties of La(2−x)Sr(x)NiO(4) (LSNO)/poly(vinylidene fluoride) (PVDF) composites with different Sr doping concentrations were investigated. The semiconducting LSNO filler particles with x = 0.2 (LSNO-1) and x = 0.4 (LSNO-2) were prepared using a chemical c...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9048383/ https://www.ncbi.nlm.nih.gov/pubmed/35496094 http://dx.doi.org/10.1039/c9ra09719h |
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author | Meeporn, Keerati Chanlek, Narong Thongbai, Prasit |
author_facet | Meeporn, Keerati Chanlek, Narong Thongbai, Prasit |
author_sort | Meeporn, Keerati |
collection | PubMed |
description | The percolation behaviour and dielectric properties of La(2−x)Sr(x)NiO(4) (LSNO)/poly(vinylidene fluoride) (PVDF) composites with different Sr doping concentrations were investigated. The semiconducting LSNO filler particles with x = 0.2 (LSNO-1) and x = 0.4 (LSNO-2) were prepared using a chemical combustion method. The microstructures, thermal properties, and phase compositions of the polymer composites and filler particles were systematically investigated. The conductivity of the LSNO fillers increased with the Sr content and had an important impact on the dielectric properties of the LSNO/PVDF composites. The percolation threshold of the LSNO-2/PVDF composite was lower than that of the LSNO-1/PVDF composite. An ultra-high dielectric permittivity (ε′) of 3384.7 (at 1 kHz and room temperature), which was approximately 340 times higher than that of pure PVDF, was obtained for the LSNO-2/PVDF composite with a filler volume fraction of 25 vol%. The enhanced dielectric properties were attributed to interfacial polarisation at the semiconductor–insulator interface, a micro-capacitor model, and the intrinsically remarkable dielectric properties of the LSNO ceramic. |
format | Online Article Text |
id | pubmed-9048383 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90483832022-04-28 Significant enhancement of dielectric permittivity and percolation behaviour of La(2−x)Sr(x)NiO(4)/poly(vinylidene fluoride) composites with different Sr doping concentrations Meeporn, Keerati Chanlek, Narong Thongbai, Prasit RSC Adv Chemistry The percolation behaviour and dielectric properties of La(2−x)Sr(x)NiO(4) (LSNO)/poly(vinylidene fluoride) (PVDF) composites with different Sr doping concentrations were investigated. The semiconducting LSNO filler particles with x = 0.2 (LSNO-1) and x = 0.4 (LSNO-2) were prepared using a chemical combustion method. The microstructures, thermal properties, and phase compositions of the polymer composites and filler particles were systematically investigated. The conductivity of the LSNO fillers increased with the Sr content and had an important impact on the dielectric properties of the LSNO/PVDF composites. The percolation threshold of the LSNO-2/PVDF composite was lower than that of the LSNO-1/PVDF composite. An ultra-high dielectric permittivity (ε′) of 3384.7 (at 1 kHz and room temperature), which was approximately 340 times higher than that of pure PVDF, was obtained for the LSNO-2/PVDF composite with a filler volume fraction of 25 vol%. The enhanced dielectric properties were attributed to interfacial polarisation at the semiconductor–insulator interface, a micro-capacitor model, and the intrinsically remarkable dielectric properties of the LSNO ceramic. The Royal Society of Chemistry 2020-01-15 /pmc/articles/PMC9048383/ /pubmed/35496094 http://dx.doi.org/10.1039/c9ra09719h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Meeporn, Keerati Chanlek, Narong Thongbai, Prasit Significant enhancement of dielectric permittivity and percolation behaviour of La(2−x)Sr(x)NiO(4)/poly(vinylidene fluoride) composites with different Sr doping concentrations |
title | Significant enhancement of dielectric permittivity and percolation behaviour of La(2−x)Sr(x)NiO(4)/poly(vinylidene fluoride) composites with different Sr doping concentrations |
title_full | Significant enhancement of dielectric permittivity and percolation behaviour of La(2−x)Sr(x)NiO(4)/poly(vinylidene fluoride) composites with different Sr doping concentrations |
title_fullStr | Significant enhancement of dielectric permittivity and percolation behaviour of La(2−x)Sr(x)NiO(4)/poly(vinylidene fluoride) composites with different Sr doping concentrations |
title_full_unstemmed | Significant enhancement of dielectric permittivity and percolation behaviour of La(2−x)Sr(x)NiO(4)/poly(vinylidene fluoride) composites with different Sr doping concentrations |
title_short | Significant enhancement of dielectric permittivity and percolation behaviour of La(2−x)Sr(x)NiO(4)/poly(vinylidene fluoride) composites with different Sr doping concentrations |
title_sort | significant enhancement of dielectric permittivity and percolation behaviour of la(2−x)sr(x)nio(4)/poly(vinylidene fluoride) composites with different sr doping concentrations |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9048383/ https://www.ncbi.nlm.nih.gov/pubmed/35496094 http://dx.doi.org/10.1039/c9ra09719h |
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